AI agents call prowlarr_list_indexers to retrieve information from Homelab without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays configuration data from Prowlarr (an indexer manager) without making changes, executing commands, or triggering external operations. It is purely informational, matching the Read category definition of retrieving or querying data with no side effects. Low severity because exposure of indexer configuration poses minimal risk—it is read-only metadata about media indexing sources.
From the tool's definition Tool name 'prowlarr_list_indexers' and description 'List all indexers configured in Prowlarr with their status' indicate a query/retrieval operation with no modification or execution capability.
Attacks that exploit this kind of access
List all indexers configured in Prowlarr with their status. It is categorised as a Read tool in the Homelab MCP Server, which means it retrieves data without modifying state.
Register the Homelab MCP server in PolicyLayer and add a rule for prowlarr_list_indexers: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Homelab. Nothing to install.
prowlarr_list_indexers is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the prowlarr_list_indexers rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for prowlarr_list_indexers. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
prowlarr_list_indexers is provided by the Homelab MCP server (nainounen/homelab-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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